Electrode-holder.



R.0.JAcKs0N.

ELECTRODE HOLDER.

APPLICATION FILED ".8. 23- IN?- 1,242,554. Y Patented Oct. 9,1917.

RAYMOND o. JACKSON, or sr.

LOUIS, MISSOURI, ASSIGNOR, BY MESNE ASSIGNMENTS,

TO METALLURGICAL LABORATORIES, INCORPORATED; OF CHICAGO, ILLINOIS, A.

CORPORATION OF ILLINOI ELECTRODE-HOLDER.

Specification of Letters Patent.

Patented Oct. 9, 1917.

a neunonmea'rebmai- 2a,1917. Seria1No.150,5-F5. 7

To all whom it may concem:

Be it known that I, RAYMOND O. JACK- arm, a citizen of the United States, residing at St. Louis, Missouri, have invented a certain new and useful Improvement in Electrode-Holders, of which the following is a full, clear, and exact description, such as will enable'others skilled in the art to which it appertains to make and use the same.

This invention relates to devices of the. kind commonly termed electrode holders, which are used for establishing electrical connection between a supply conductor and an electrode that becomes highly heated when it is in use, such, for example, as the electrode of an electric furnace.

One object of my invention is to provide an electrode holder of novel construction invention,

in said that will effectively cool the electrode with which it is used.

Another object is to provide an inexpensiv water-cooled electrode holder that can be clamped tightly to the electrode with which it is used, and which is so constructed that it can be easily connected to a supconductor. Other objects and desirfeatures of my invention will be hereinafter pointed out.

Figure 1 of the drawings is a vertical sectional view, illustrating, an electrode holder construpted in accordance with my invention, used for connectin a supply conductor to the electrode of an e ectric furnace.

Fig. 2 is a top plan view of said electrode holder.

Fig. 3 is a vertical sectional view, taken on the line 3-3 of Fig. 1.'

Fig. 4 is a side elevational view, illustratanother form of my invention; and

ig. 5 is a perspective view of my improved electrode holder With the coil re- 'lnoved. y

Referring to Fig. 1 of the drawings,-

which illustrates the preferred form of my A designates an electrode that projects outwardly through the wall 1 of an electric furnace, and B dcsi nates a su ply conductor. M improved e e'ctrode ho der, which is used or establishing electrical connection between said is adapted to be mounted on the outer end portion (1): she electrodeA, a cooling element supply conductor and said electrode, comprises a body portion that,

portion that completely 'surrounds the electrode and through which we ter or any other suitable cooling medium can circulate, and means for connecting the sup ply conductor B to said body portion. The body portion of the holder is preferably formed in such a manner that it can be clamped in snug engagement with the elec- 'tI'OClG, so as to insure a good electrical contact between the electrode and the holder, and in the embodiment of my invention herein illustrated the body portion of the holder consists of a split clamp formed from two plates 2 and 3 of copper or other suitable ma terial arranged one Within the other and spaced apart, so as to receive the cooling element of the holder, which preferably con sists of a coil of pipe C Whose opposite ends are adapted to be connected to pipes 41, as shown in Fig. 2, through which water circulates. The plate 2 that forms the outer wall of the body portion of the holder is provided with a pair of cars or flanges 2 that extend parallel to a pair of ears or flanges 3 on the inner plate 3, and bolts or other suifi able fastening devices 5 are arranged transversely in said ears, as shown in Fig. 3, so as to enable the inner plate 3 to be drawn into snug engagement with the electrode A by tightening the nuts on the bolts 5. Spacing devices or fillers 6 are arranged between the ears 2" on the outer plate-and the ears3 on the inner plate of the holder, so as to impart suflicient rigidity to same to prevent them from being bent out of-shape when the nuts on the bolts 5 are ti htened, the spacers 6 preferably extending into the space in the body ortion of the holder that receives the coil 6, so as to reinforce and strengthen the lugs 3 on the inner plate at the point where they merg The inner plate 3 is prov1ded with holes 7, as indicated in Fig. 3, through which the helixes of the coil C pass, and the inner edges of the spacers 6 are notched at 8,;as

e into said plate.

shown in Fl. 1, so as to. provide a clear plate2 is provided with lugs 10.; that la, .1 over the projecting end portions of the 0011 C, so as to eliminate the po ssibility of the upper side of the coil moving longitudinally with respect to the r whe at e 

